diff --git a/src/backend/utils/init/miscinit.c b/src/backend/utils/init/miscinit.c
index 9a8902c24a4..df02d202663 100644
--- a/src/backend/utils/init/miscinit.c
+++ b/src/backend/utils/init/miscinit.c
@@ -1809,10 +1809,7 @@ expand_shared_preload_libraries_string()
 
 
 	/* deduplicate list string */
-	if (list_length(elemlist) > 1)
-	{
-		deduplicate_elemlist = removeDuplicates(elemlist);
-	}
+	deduplicate_elemlist = removeDuplicates(elemlist);
 
 	/* format string delimiter with ',' */
 	StringInfoData expand_string;